As a child he was given his own suit of armor; at the age of sixteen, he helped defeat the French at Cr cy. At Poitiers, in 1356, his victory over King John II of France forced the French into a humiliating surrender that marked the zenith of England's dominance in the Hundred Years War. As lord of Aquitaine, he ruled a vast swathe of territory across the west and southwest of France, holding a magnificent court at Bordeaux that mesmerized the brave...